Mineral: |
Hematite |
Reference: |
EABFY13 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
Eu<3+>
- europium(III)
|
Site Type: |
»Fe-OH |
Equation: |
2 »Fe-OH + Eu<3+> ⇔ (»Fe-O)2-Eu<1+> + 2 H<1+> |
LogK: |
20.65 LogK°I=0 (Conversion to I = 0): 20.96
LogK2.31 nm−2 (SSD-normalized): 22.52
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.01 mol/L
NaCl
|
Temperature: |
308.15 K |
Solid/Liquid Ratio: |
0.5 g/L |
pH Range: |
3 - 8 |
Ligand Concentration Range: |
3.7E-8 mol/L |
Fit Method: |
FITEQL |
Comment: |
Equilibrium constants referenced to the site-occupancy standard state as suggested by [S03] and calculated using the equation:
K‡ = K((NsAs)²/(N‡A‡))*Cs. Cs is the solid phase concentration in this work (0.5 g/L), Ns and As are the surface site density and surface area measured in this work, 4.28E+18 sites/m² and 30.7 m²/g, respectively. N‡ and A‡ are the hypothetical values suggested by [S03], 10E+18 sites/m² and 10 m²/g, respectively. |
|